Tar-burner.



A. V. filGBY. TAR BURNER.

APPLICATION FI LED DEC. 9.1916.

mm Nov. 5, 1918.

INVENTOR WITNESSES ill) THUMWEE.

epeettlcatten of Letters Patent.

retested not. a, rate.

Appllw a plan filed December a, with. dental Ito. ttheta.

To all whom it may concern:

vlBe it known that l[, A BERT V. Riser, a citizen ofthe United States, residing at Sharon, in the county of Mercer and State of Pennsylvania, have invented certain new and useful Improvements in llar Burners, of which the following is a specification.

This invention relates toinjector burners for liquid fuel, and has for its object to pro vide for breaking up' any particles of foreign matter which the liquid fuel may contain, thereby to prevent clogging of any portion of the burner and to insure the efi'ective passage of the liquid fuel through the burner.

A further object of the invent on is to provide for an edective clearance in the inlet port, so that the liquid fuel asslng through theport may not be met wlth any obstruction to its free and easy flow therethrough.

A still further object of the invent on 1s to so arrange the inlet port and the inlet valve as to obtain an exceedinglyfine adgustment in variations in the size of the inlet port, and to have the valve coiiperate with the port in such a manner as to edectually clear away any accumulations of foreign matter and to force the same away from the inlet, port and into a suitable receptacle for.

containing the same. In this connection, provision is also made for flushing the recep-. tacle and the entire burner In. a very convenient and edective manner whenever desired.

A still further object of the invention is to edectnally break up any particles of foreign matter which are small enough to pass through the inlet portand whlch might do the fuel tube in theburner nozzle.

ne embodiment of means for obtaining the features above enumerated has been shown in the accompanying drawings, but

it will, of course, be understood that various.

changes in the apparatus may be made, within the scope o the appended claims, without .depmg from the sp1r1t of the present invention. lln'the ti -"t Figure 1 central dddtl, ma takenthrmlah a ll l l i bnrner emmt ftures t asse t tion Fig, 2 is a plan section n on 1 l t, Elia t, e valve i s omitted.

Fig. 3 is a cross-sectional view taken on the line 3-3 of Fig. 2.

Fig. 4 is an enlarged fragmentary plan view of the valve seat.

Likereference characters in each of the res of the drawing designate corresponding parts.

The present device includes a valve casing 1, which defines a substantially rectangular chamber openat its top and provided with a removable cover plate 2, secured in place by suitable tastenings 3. In the normal position of the device, the valve casing assumes a position at an angle of about forty-five degrees to the horizontal, and the top thereof is pierced by a vertical opening 4 constituting an inlet, said opening being definggd by an upstanding nipple 5. A pipe fitting 6 known generally as a tee is connected with the inlet a, and a fuel pipe 7 is connected with the upri ht branch of the tee, there being a suite le valve 8, say for instance, a turning plug, fitted in the fuel pipe 7. A steam pipe 9- communicates with the transverse branch of the tee 6 and is provided with a suitable globe valve 10. The lower end portion of the valve casing 1 is provided with astufling box 11 throughwhich extends a rotatable endwise movable valve stem 12 having a threaded intermediate portion 13 fitting a threaded opening in the lower end wall of the valve casing. The inner end of the valve stem carries the valve 14: which is provided -with an intermediate upstanding ear 15 pierced by the inner end of the valve stem and secured thereto by means of a suitable fastening, say for instance, a nut 16. The rear end of the valve stem projects enternally of the stufling box and is rovided with a crank handlel'l whereby t' e valve etc may be conveniently rotated. By reason of the threaded engagement between the valve stem and the valve casing, the valve stemis given an endwise movement in either direction by a pro er manipulation ofthe crank handle 17. he outer projecting end portion of the valve stem is provided with a scale l8-eeiipetat1v: with a pointer 19 carried. by the. valve. casing whereby the position of the valve: v be readfi 'y determd, t. the nave itself is entirely l .1 wizthinthe casing. The

t iein the form at a substantially a late, and itsrear e 1e beveled feedifitt, as best indicated in lllltl Fig. 1 of the drawings. The valve seat for this valve is made up of a pair of duplicate plate members 21, which fit within a seat or recess 22 formed in the bottom of the valve casing in front of the inlet 4. Each member 21 is held in place by a suitable fastening 23. The upper face of each plate member 21 adjacent its inner edge is provided with a longitudinal recess 24, and the two'recesses produce a guideway for the valve 14 which has a slidable fit within the recess 24. The meeting edges of the plates 21 are provided with notches or recesses 25, the front end walls of which are at substantially right angles to the meeting edges, while the longi-- tudinal walls converge rearwardly and meet at a common point, thereby producing a triangular opening or port through the plates 21. As best indicated in Fig. 3 of the drawings, it will be seen that the longitudinal wall of each notch or recess is undercut, so that the opening flares downwardly so as to give an effective clearance to the liquid fuel when passing downwardly through theport or opening. At suitable intervals along the longitudinal walls of this port are sharp projections 26, those on one wall being alined transversely with the projections onthe other wall, and coming into close relation thereto but not touching one another, so as to serve a purpose as will be hereinafter explained.

The bottom of the valve casing is provided with a downward extension constituting a trap or receptacle 27 having a removable closure plug 28 at its lower end, and provided at its upper end with a suitable valve, such as a turning plug 29, whereby communication is had between the interior of the valve casing and the receptacle or trap 27.

Leading from the port which is controlled by the valve 14 is an outlet passage 30, terminating in a substantially horizontal nipple 31, to which a tee 32 is suitably connected. A pipe 33 communicates with the other branch of the tee 32, and is designed to convey steam or compressed air thereto, as may be desired. A nozzle 34 leads outwardly from the tee 32, and within this nozzle is a fuel pipe 35 leading from the nipple 31 and disposed centrally within the coupling 32 and nozzle 34, so as to define an annular space through which the steam or compressed air may pass outwardly through the nozzle and convey the liquid fuel therewith in the usual manner. On theend of the pipe 35 and within the nozzle, I haveprovided means for breaking up such hard particles and foreign matter as may issue from the discharge end of the pipe 35, and this device consists of a tubular casing 36 suitably fitted to the outer end of'the pipe 35 and provided with a succession of bafiles against which the hard particles and foreign mat ter become impinged and thereby broken up into smaller particles which are carried along by the liquid fuel and therefore do not clog the nozzle. 1 have shown three battles, each bafiie being made up of a pair of rings 37 suitably held within the casing 36 and provided with openings or bores which flare outwardly in opposite directions from the meeting walls of the rings. These rings are reversely arranged and successively in mutual contact, thereby providing a series of openings 38, 39 and 40, which openings successively decrease in diameter. The discharge or exit opening 41 of the casing 36 is flared outwardly so as to give a proper clearance to the fuel which then mingles with the steam or air and is thereby drawn out through the nozzle.

In the operation of the device, the liquid fuel is admitted through the pipe 7 into the valve casing l, the valve 29 and the trap 27 of course being closed, whereby the liquid fuel will fill the valve casing 1 and flow downwardly through the V-shaped port 25 into the passage 30, from which it will be drawn through the pipe 35 and the bafiles or breaker device at the end of the pipe 35, and thence outwardly through the discharge end of the nozzle by the suction action of the steam or air admitted through the 'pipe 33. By the proper manipulation of the crank handle 17, the valve 14 may be moved endwise across the port 25 so as to vary the size of the port and thereby conveniently and effectually control the amount of fuel admit ted to the nozzle. This adjustment of the port 25 is a very fine one, because of the tapered or triangular shape of the port over which the valve 14 works.

Tar or other heavy liquid fuels, for which the present burner has been especially designed, of course contains solid matter which ordinarily soon clogs up the burner. According to thepresent invention, the widest part of the triangular opening 25 is of a length less than the greatest width of the discharge opening through the nozzle 34, wherefore such so id particles as may pass through the port 25 will, of course, pass through the discharge nozzle. Such solid particles as may lodge in or he across the port 25 may be convenientlv removed therefrom by manipulation of the valve stem 12 soas to slide the valve 14 back and forth across the port 25, the knife edge 20 at the rear end of the valve 14 operating to out such solid particles and also wipe the same downwardly and rearwardly across the beveled rear end 42 of the plates 21, whereby such particles may be permitted to pass-down into the trap 27 by opening the valve 29. Any solid material in the form of threads or slivers which may lodge in the port 25 is prevented from passing therethrough by the projections 26. Whatever solid particles may pass through the port 25 will be thrown violently into nasaeov broken up and carried off through the nozzle.

llll

Theentire burner may be flushed for cleansing purposes by introducing steam into the casing from the pipe 9 by opening the valve 10, whereby the entire burner'may be conveniently blown out. When blowing out the burner, it will, of course, be understood that the valve 29 should be open and the lug 28 removed from the trap 27.

aving thus described the invention, what is claimed and desired to be secured by Letters Patent, is

l. A liquid fuel burner comprising a valve casing having an inlet port and an outlet port, a valve for the outlet port, an ejector nozzle communicating with the outlet port, and a, trap in communication with the in terior of the valve casing and provided with a valve controlling communication between the trap and the valve casing.

2. A liquid fuel burner comprising a valve casing having an outlet port, a valve therefor, an ejector nozzle communicating with the outlet port, a trap having a valve-controlled communication with the casing, a movable closure for the outer end of the trap, and a steam pipe communicating with the casing for blowing out the burner.

3. A liquid fuel burner comprising a casing having an outlet port, a valve therefor, an ejector nozzle communicating with the outlet port, a trap having a valve-controlled communication with the casing, an inlet pipe communicating with the valve casing in substantial alinement wlth the trap, and

a valve-controlled fluid pressure pipe cominunicating with the fuel pipe.

4. A liquid fuel burner comprising a valve casing provided with iii substantially trian'-' v gular outlet ort, said port havin converging side wa s and said side wa ls flaring outwardly toward the discharge side of the port, and a slide valve working over the port on thenarrow inletside thereof.

5. A liquid fuel humor comprising a valve casing provided with a substantially triangular outlet port'having pro'ections u on the longitudinal walls thereo and a ide valve workin across the port. 6. A liqui fuel burner comprising a casing having an outlet port, a slide valve worki across the port, and a trap disposed to receive solid matter scraped from the port by the slide valve." j

7. A liquid fuel burner comprising a valve casin having an inlet in its top, a trap ameter of each wise movable valve stem connected. to the.

valve and projecting externally of the easing, and an ejector nozzle communicating with the outlet port.

8. A liquid fuel burner comprising a casing having an outlet passage provided with an outlet port defined by a pair of lates provided in their meeting edges Wit cooperating notches defining triangular outlet port, a sllde valve workin a substantially across said port on the inlet side thereo and an ejector nozzle communicating with the outlet passage.

9. A liquid fuel burner comprising a casing having an outlet passage provided with an outlet port defined by a pair of plates provided In their meeting edges with co operating notches definin a substantially triangular outlet port, said plates havin a guideway extending across the port, a slide valve mounted in said guideway and working across the port, and an e ector nozzle communicating with the outlet passage.

10. A liquid fuel burner having a plurality of annular bames removably secured therein, said baflies being arranged end to end and having edges adapted .to successively engage with and break up solid material.

' 11 A liquid fuel burner provided with an ejector nozzle having a plurality of annular baflles removably secured therein, said 13. A liquid uelburner having an ejector nozzle provided with a. fuel pipe therein,

Jllllli said fuel pipe containing a series of removable battles, each bafile being'made up of a pair of rings disposed in mutual contact with their openings flaring outwardly in oplltl posite directionsijthe minimum internal diflle decreasingoutwardly toward the discharge end of the nozzle. in testimony whereof l have hereunto set my hand.

ALBERT V. lGlBY.

baflles being arranged end to end and hav- 

